Oregano
If you use only one herb in your cooking, make it oregano. This potent herb (which some chefs think actually tastes better dried) contains up to 20 times more cancer-fighting antioxidants than other herbs, on average, and holds its own against fruit, as well. According to USDA researchers, 1 tablespoon of fresh oregano has the same antioxidant power as an entire apple. And gram for gram, the herb has twice the antioxidant activity of blueberries.
Extra: 10 Best Herbs for Indoors
Photo: Christa Neu